Determination the degree of repigmentation measured by the VASI score (Vitiligo area Scoring Index) after treating with the combination treatments (narrowband ultraviolet B and topical psoralen plus ultraviolet A) and compare it with narrowband ultraviolet B alone.

Determination of the color of repigmentation, pattern of repigmentation, and the cessation of spread of vitiligo after treating with the combination treatments (narrowband ultraviolet B and topical psoralen plus ultraviolet A) and compare it with narrowband ultraviolet B alone.

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Please refer to this study by its ClinicalTrials.gov identifier: NCT01732965